Document Detail


Room temperature phosphorescence of alpha-bromonaphthalene induced by cyclodextrin in the presence of hexahydropyridine or 1-ethylpiperidine and its application.
MedLine Citation:
PMID:  17386568     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Two novel heterocyclic third components, hexahydropyridine (HHP) and 1-ethylpiperidine (EP) were firstly found to enhance room temperature phosphorescence (RTP) of alpha-bromonaphthalene (alpha-BrN) induced by cyclodextrin. The effects of equilibrium time for formation of inclusion complex, temperature, pH values and the variation of concentrations of each component on RTP of alpha-BrN and the RTP lifetime of each ternary complex had been investigated and compared to discuss inclusion mechanism of ternary complexes. The RTP lifetimes of alpha-BrN/beta-CD/HHP, alpha-BrN/beta-CD/cyclohexane (CH) and alpha-BrN/beta-CD/EP were 6.18, 7.71 and 9.36 ms, respectively. Based on the strongest RTP of alpha-BrN induced by CD in the presence of EP, a method for determination of EP was established. Under the optimal conditions, the analytical curve of EP gave a liner dynamic range of 1.50x10(-4) to 1.50x10(-3) mol L(-1) with a detection limit of 4.8x10(-5) mol L(-1). When the established CD-RTP method was applied to determine the concentration of EP synthetic samples in distilled water, the experimental results demonstrated that the recovery was 91.4% with a relative standard deviation less than 2.85% (n=7).
Authors:
Ya-Xian Zhu; Jing-He Peng; Yong Zhang
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-11-09
Journal Detail:
Title:  Analytica chimica acta     Volume:  583     ISSN:  1873-4324     ISO Abbreviation:  Anal. Chim. Acta     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-03-27     Completed Date:  2007-05-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370534     Medline TA:  Anal Chim Acta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  364-9     Citation Subset:  IM    
Affiliation:
Chemistry Department, Xiamen University, Xiamen 361005, PR China. yaxian@xmu.edu.cn
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MeSH Terms
Descriptor/Qualifier:
Cyclodextrins / analysis*
Luminescent Measurements / methods*
Naphthalenes / analysis*
Piperidines / analysis*
Pyridines / analysis
Temperature*
Chemical
Reg. No./Substance:
0/Cyclodextrins; 0/Naphthalenes; 0/Piperidines; 0/Pyridines; 766-09-6/1-ethylpiperidine; 90-11-9/alpha-bromonaphthalene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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